Today, we’re excited to introduce passkeys for your Fastmail account, offering a quicker, more secure login method. Passwords pose security risks due to predictability and the common practice of using the same password for multiple accounts. Password managers help but are not foolproof. Passkeys are cryptographic keys that offer greater security benefits over passwords. They are replay resistant, database-leak resistant, phishing proof, and quicker to use. While there are some integration challenges with browsers and third-party password managers, the future of passkeys looks promising for improving online security and combatting phishing attacks.
https://www.fastmail.com/blog/introducing-passkeys/